Toothbrush head



FIG. 1 is a perspective view of a toothbrush head showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is an enlarged top view thereof.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a toothbrush head, as shown and described. 